ことなしにkoto nashi ni“without doing something”

ことなしに means without doing something. It is a JLPT N1 Japanese grammar pattern used to express that if you don’t do A, B is impossible or will not happen.

This grammar point appears in formal writing, speeches, essays, and JLPT N1 reading passages. If you want to emphasize that an action is absolutely necessary to achieve a result, ことなしに is a powerful pattern to learn.

What does ことなしに mean?

Use ことなしに when you want to say that without doing A, B cannot happen or it is impossible to B unless A is done. The pattern strongly implies a necessary condition.

Natural translations include:

• without doing something
• unless one does something

The nuance is always that skipping A prevents B entirely.

How to form ことなしに

Examples of the pattern:

• 努力(どりょく)することなしに
• 許可(きょか)をもらうことなしに
• 準備(じゅんび)のことなしに

You cannot attach ことなしに directly to a noun without the の linker. In JLPT questions, wrong answer choices often skip that の.

When is ことなしに used?

Use ことなしに in situations like:

• emphasizing that an action is a prerequisite for a result
• stating objective, often universal truths or rules
• formal writing, editorials, serious explanations

Tone and register:

• formal, slightly stiff. It is rare in casual conversation.
• Common in test questions, newspaper opinion pieces, academic prose, and JLPT N1 reading.

ことなしに example sentences

After reading each sentence, ask what job ことなしに is doing: removing the action makes the result impossible. That makes the nuance stick better than a one-word translation.

Nuance of ことなしに

The key nuance is an action is an absolute prerequisite; without it, the result cannot exist. The pattern is almost always paired with a negative potential form (～できない, ～ありえない, ～難しい(むずかしい)). It never appears with an affirmative outcome.

This matters because learners sometimes try to use ことなしに just to mean “without doing X” and then add a normal, positive result — but that misses the built-in “impossible otherwise” vibe. The grammar encodes a judgment of necessity, not just a sequence.

For example:

• It carries a formal, authoritative tone — perfect for rules, principles, and general truths.
• Compared with casual “なしで” or “しないで”, ことなしに feels like a written, emphatic rule.

ことなしに vs ずに

Both patterns mean “without doing,” but the nuance and required sentence structure differ sharply.

If you can replace “without doing A” with “unless A is done, B won’t happen,” then ことなしに is the right choice. If you’re simply narrating an action someone skipped, ずに fits better.

Common mistakes with ことなしに

Is ことなしに on the JLPT?

Practice questions for ことなしに

Learning path for ことなしに

Related grammar to review next

• ことごとく — another N1 こと-pattern, conveying “each and every” with a formal tone
• ことこの上(うえ)ない・この上(うえ)なく — builds on the こと-structure for extreme emphasis (“nothing more … than”)
• こともあって — uses こと to add a causal nuance, similar to “partly because”
• ことのないように — the negative こと-pattern for “so as not to,” sharing the idea of prevention

Learn ことなしに with Hane

If you want to review ことなしに together with the related patterns above, Hane helps you practice Japanese in short, focused sessions.

Browse more lessons here:

• All grammar lessons
• JLPT N1 grammar lessons